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| 1 | Generalized Low-Density Parity-Check Coding Scheme with Partial-Band Jamming显示文摘In this study,a class of Generalized Low-Density Parity-Check(GLDPC) codes is designed for data transmission over a Partial-Band Jamming(PBJ) environment. The GLDPC codes are constructed by replacing parity-check code constraints with those of nonsystematic Bose-Chaudhuri-Hocquenghem(BCH),referred to as Low-Density Parity-Check(LDPC)-BCH codes. The rate of an LDPC-BCH code is adjusted by selecting the transmission length of the nonsystematic BCH code,and a low-complexity decoding algorithm based on messagepassing is presented that employs A Posteriori Probability(APP) fast BCH transform for decoding the BCH check nodes at each decoding iteration. Simulation results show that the LDPC-BCH codes with a code rate of 1/8.5have a bit error rate performance of 1 10 6at signal-noise-ratios of 6.97 dB,4.63 dB,and 2.48 dB when the fractions of the band jammed are 30%,50%,and 70%,respectively. | Qi Li Xinru Qu Liuguo Yin Jianhua Lu | 2014 | Tsinghua Science and Technology2014，19，2： | 5 |
| 2 | Emergence of highly pathogenic avian influenza A(H5N8)clade 2.3.4.4b viruses in grebes in Inner Mongolia and Ningxia,China,in 2021显示文摘Highly pathogenic avian influenza(HPAI)subtype H5Nx viruses have spread globally and are a major concern for poultry,wild birds,mammals,and even humans(de Vries et al.2015;Zeng et al.2022).The hemagglutinin(HA)genes of H5 subtype viruses have evolved into multiple clades and some of these clades have been further divided into subclades(Cui et al.2022).Clade 2.3.4.4H5N8 HPAI viruses(HPAIVs)have caused several waves of disease outbreaks in wild birds and domestic poultry(Wang et al.2022). | Qiuzi Xu Xinru Lü Yi Li Hua Luo Zhen Zhang Xiang Li Rongxiu Qin Qing An Fengyi Qu Zhenliang Zhao Chengbo Zhang Weidong Wang Yuecheng Li Yajun Wang Xiangwei Zeng Zhijun Hou Jingqiang Ren Yulong Wang Yanbing Li Hongliang Chai | 2024 | Journal of Integrative Agriculture2024，23，1： | 0 |
| 3 | A Cultural Analysis of the Universal Declaration of Human Rights显示文摘On December 10,1948,the General Assembly of the United Nations adopted and proclaimed the Universal Declaration of Human Rights (hereinafter referred to as the Declaration). | QU XINRU Cheng Zhen | 2010 | The Journal of Human Rights2010，9，5： | 0 |
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